Plastic composition



Patented June 17, 1930 WILLIAM HOSKDTS, Oil CHICAGO, ILLINOIS PLASTIC COMPOSITION No Drawing. I

The present invention, relates to improvements in plastic compositions, and more par-.

ticularly in those containing proteins, such as gelatine, glue, and like substances as their 6 essential constituents.

In-accordance with the present invention, bodies are formed of such plastic masses containing, in addition to the protein constituents, a sulfonated fatty oil together with any 10 desired'fillers, hardening agents and the like. An aqueous solvent is employed to the extent necessary to give a solution of the desired fluidity, depending upon the g urpose for which the material is intended. he Proper- 16 tion of sulfonated oil to the protein constitu ent may vary from 0.1 fluid ounce to 4 fluid ounces per pound of protein. Sulfonated cotton seed oil, sulfonated corn oil, sulfonated' castor oil, or other sulfonated oils may be 20 employed, sulfonated castor oil be' markedly superior in its properties to ot er sulfonated oils. p I, The composition of' the present invention is more particularly ada ted for use in the formation of sheets or V orof plastic bodies built up by asuccession of thin films. The following composition may suitably be employed for such purposes.

Ewampk No. 1

Gelatine, one pound; sulfonated castor oil, 2.8 fluid ounces; water 8 pounds; fillers in any desired tproportion, up to one pound. Pigments or yes may be added, as d as formaldehyde, hexamethy enetetramine, and the like, may be incorporated in the plastic. In some cases, it is found desirable also to include small proportions of pr'eservthe like.

Example No. 2

- Gelatine 1 pound; sulfonated, oil

lb 3.4 to 4'fluid ounces; glycerine 1 to 2 fluid If desired, suitable hardenin' agents, suching agents, "such as phenol, thymol, and the Application fledfAprfl. 7, 1924. I Serial No. 704,880.

ounces; potassium bichromate 60 grains formaldehyde (40%) 2 to 4 ounces; phenol, 0.3 to 0.5 ounces and water, 2 to. 3 pounds, together with suitable-dyes or pigments. These compounds have been found particularly suited, as hereinbefore stated, for the formation of thin films recess described in erial No.'562,7 26, filed May a continuous or rogressive method of manufacturing such Elms is disclosed. The films thus produced are strong, transparent and permanently pliable. The compositions may 'k ew ise be emplo ed in forming films or building up artic es by dipping, coating, spraying or the like.

Oktifli: astic com osition com ris' lati'ne an sulfonated castor oil, thd p ro rtions of 0.1 to 4'fluid ounces per pound of gelatine.

2. A lastic com tine an sulfonate tion of 0.1 to 4 fluid-ounces per poun of gelatine, and a hardening a t.'

3. A thin, paper-like sustained sheet consisting essentially of gelatine and sulfonated castor oil in the proportion of 0.1 to 4 ounces tfier pound of elatine.

4. A 'n, paper-1i e self-sustained sheet consisting essentially of gelatine', sulfonated castor oil in the proportion of 0.1 to 4 ounces perpound of gelatine, and a hardening agent. -5. A self sustaining, transparent flexible sheet of non hygroscopic character comprismggelatine and castor oil.

22, 1922, m which 'tion comp WILLIAM HOSIHNS.

gelafatty oil in the pro I:

5 to 20% of sulphonated for example, by the my prior application- 

